What powers grolier.com?
Last seen May 2026 · 28 technologies across 17 categories
A/B Testing
Analytics
Adobe Analytics
since Jan 2022
Authentication
Google Sign-in
since Feb 2022
CDN
Amazon CloudFront
since Jun 2018
Amazon S3
since Oct 2025
Cloudflare
since Feb 2022
Google Hosted Libraries
since Feb 2022
Unpkg
since Feb 2022
Customer data platform
Adobe Experience Platform Identity Service
since Jan 2022
Font Scripts
Font Awesome
since Apr 2018
Google Font API
since Feb 2018
JavaScript Frameworks
JavaScript libraries
Load balancers
Amazon ALB
since Feb 2022
PaaS
Amazon Web Services
since Jan 2019
Programming languages
Java
since Jun 2018
Security
Cloudflare Bot Management
since Feb 2022
Segmentation
Adobe Audience Manager
since May 2022
Tag managers
Adobe Experience Platform Launch
since Jan 2022
UI frameworks
Animate.css
since Feb 2022
Web Frameworks
Web Servers
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Open Page Rank
5.64 / 10 · ranked #142,163 of all domains
383 referring domains · OpenPageRank
Infrastructure
- Hosted on SECURITYSERVICES (204.74.99.101)
- Email: Broadcom MessageLabs
- Email security: no SPF record, no DMARC record
- SSL: Amazon Trust Services, RSA 2048, wildcard, expires Feb 2027
- Common Crawl link graph: rank 46,594, 39 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| auth.grolier.com | 25 |
| go.grolier.com | 15 |
| bkflix.grolier.com | 8 |
| go-elem.grolier.com | 8 |
| go-middle.grolier.com | 8 |
| nbk.grolier.com | 8 |
| tfx.grolier.com | 8 |
| www.grolier.com | 8 |
| e21.grolier.com | 3 |
| ipinfo.grolier.com | 3 |
Full technology history →
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Recent changes
- dropped Apache HTTP Server May 2026
- dropped CentOS May 2026